Improvement in railroad-car axle-boxes



2 f, L HARRIS Sheets Shee Car-Axle Box.

Patented Jan. 1860.

[7277? am em. a zW/V N-PETERS. PHOTO UNITED STATES PATENTOFFICE.

JOSEPH HARRIS, oF'DoRoHEsTER, MASsAoHnsE 'rsfl a, f;

lMPROVEMENT m RAILROAD-CAR AXLE-BOXES. 7

Specification forming part of Letters Patent No. 26,673, dated anuary 3, 1 860.

1'0 all whom may concern:

Be it known that I, JOSEPH HARRIS, of Dorchester, in the county of Norfolk and State of Massachusetts, have invented certain new and useful Improvements in Railroad- Oar AxleBoxes, of which the followingis afull,

clear, and exact description, referencejbeing had to the accompanying drawings, making part of this specification, in which- Figure l is a View of myimproved box; Fig. 2, a sect-ion through the same and through the axle, taken longitudinally; Fig. 3, a transverse section of the same; Fig. 4:, a detail to be referred to hereinafter.

In the railroad-oar axleboxes with whichI am acquainted as at present constructed and in general use the end-thrust of the axle as it plays back and forth longitudinally isreceived on the soft-metal bearing. on which the axle runs, and this metal is soon bruised and worn by it.

To obviate this is the object of my present invention, which consists in so forming abox that it will have a bearing both at front and back to receive the end-thrust of the axle.

That others skilled in the art may understand and use my invention, I'will proceed to describe the manner in which I have carried out the same.

In the said drawings, A represents a castlnetal box having a rim or flange B at its rear and another one C at its front end, the latter being formed in two parts, the uppera of which is removable for the purpose of inserting the soft-metal bearing b,Figs. i3 and 3, and of packing the space 0 around the axle. The back ct and the front e of the box (part of which is removable with the portion a of the flange) have each a hole in them of suiticient size to receive the portions f of the axle D, which is turned down of a uniform size from the point g to the end of the axle. The collar, which is usually formed on the end of the axle, is in this case dispensed with, so

that the axle can be inserted from the rear end of the box througlra holejof theisa me I size as the part of the axle which restsupon I the bearings in the box.

Acollar his shrunk l on the axle at g immediately back offwhere 5; p the axle is turned down. Awasher/i, of brass or other suitable material,isinserted between the collar h and the back. dot the box, and a similar washer Z is placed between the front e of the box and a strongsteelpin k, which I is inserted in a hole near thegend of theiaxle. f Instead of the pink a screw-n ut maybe placed on the end of the axle. A cap; E (detached in Fig. 4) fits over the flange O to excludethe dust from the bearings.

With a box constructedasabovedescribed i I obtain not only the required bearings at d and e to receive the end-thruster the axle;

but I have also a box which is particularly} tight and capable of excluding dust from thel I i bearings on which the axle runs; This advantage I obtain principally by dispensing with the collar at the end ofytheaxle so that it can be inserted in holes at the yfrontfl and back of the box of fcorrespondingsize p with the portion f of the axle. This also avoids the necessityof wedginglover the soft- 1 metal bearing to bring itdownionto the 1. 1 tion f of the axle, as is thecase in some boxes of this class--for example, in that known as I the Lightner box.

\VhatI claim as my invention, and desire X to secure by Letters Patent, isl 1 In combination with an axle-box in whichlf H the journal of the axle is inserted endwisej I and in which the soft-metal bearing maybe also inserted from the end, the front and back bearings cl e and flanges h k for receiving the i end-thrust of the axle and thus protecting i the soft'metal bearing, substantiallyfasde- M f scribed. p p p JosEPn RRIS. p \Vitnessesr I THos. R. ROAGH, P. E. TESCHEMACHER. 

